Parking lot mobile wireless elastic charging system and charging control method

Abstract

The invention relates to a parking lot mobile wireless elastic charging system and a charging control method, and the system comprises a guide rail device which is laid in the ground of a parking area formed by a plurality of parking spaces which are continuously arranged, and is used for providing a track channel for a mobile wireless charging module to move across the parking spaces; the mobile wireless charging module is arranged on the guide rail device and used for moving to the position below the corresponding parking space and controlling starting or stopping of wireless charging of the vehicle; the cable management module is connected with the mobile wireless charging module and is used for supplying power to the mobile wireless charging module and communicating with the mobile wireless charging module through a flexible cable; the system control unit is connected with the mobile wireless charging module and the cable management module and used for receiving the charging request, controlling the mobile wireless charging module to move according to the charging request, executing wireless charging and controlling the mobile wireless charging module to move away after charging is completed. The method has the advantages of equipment safety, flexible scheduling and the like.

Description

Technical Field

[0001] This invention relates to the fields of traffic engineering and electrical engineering, and in particular to a mobile wireless flexible charging system and charging control method for parking lots. Background Technology

[0002] With the rapid increase in the market penetration rate of electric vehicles, parking lot charging systems, as an important supporting infrastructure, are facing increasingly severe challenges. Currently, the solutions commonly adopted in the industry mainly focus on two technical approaches: wired charging piles and fixed wireless charging.

[0003] Wired charging requires the independent installation of a charging station next to each parking space, along with dedicated power and communication lines. This static "one station per parking space" configuration results in high initial construction costs and complex pipeline engineering. More importantly, the charging station is fixed to a specific parking space, and its utilization rate depends entirely on the parking and charging needs of that space. It remains idle during most non-charging periods, leading to significant resource waste and low investment efficiency. Fixed wireless charging, by pre-burying transmitting coils under the ground in specific parking spaces, achieves contactless energy transfer, improving the user experience. However, this technology still suffers from the inherent limitation of "dedicated space use." Each parking space with wireless charging capability requires a complete set of underground transmitting hardware, making large-scale deployment extremely expensive. Simultaneously, the system lacks flexibility, unable to dynamically allocate resources based on the real-time distribution of electric vehicle charging demand within the parking lot, limiting overall energy efficiency. Furthermore, equipment failure requires ground damage for repair, resulting in poor maintainability.

[0004] In addition, there are some explorations of mobile charging concepts in existing technologies, such as using a track-mounted robotic arm for wired charging plugging and unplugging. However, these solutions are usually complex in structure, have a limited range of motion, and still face a series of technical challenges such as physical connector wear, waterproofing and dustproofing, and the management of power cables during movement. They have failed to achieve an effective combination of the convenience of wireless charging and large-scale flexible coverage.

[0005] In summary, the core contradiction of existing technical solutions lies in the mismatch between the fixed spatial location of charging resources and the random and dynamic spatiotemporal distribution of user demand. Therefore, there is an urgent need to develop a new type of intensive and mobile wireless charging system, aiming to flexibly respond to charging requests from multiple parking spaces with a dynamically dispatchable shared charging resource, thereby significantly improving equipment utilization and system service capabilities while reducing total infrastructure investment. Summary of the Invention

[0006] The purpose of this invention is to provide a mobile wireless flexible charging system and charging control method for parking lots that achieves flexible response through dynamic scheduling.

[0007] The objective of this invention can be achieved through the following technical solutions: A mobile wireless flexible charging system for parking lots includes a guide rail device, a mobile wireless charging module, a cable management module, and a system control unit. Guide rail device: laid inside the ground of a parking area formed by multiple continuously arranged parking spaces, used to provide a track channel for the mobile wireless charging module to move across parking spaces; Mobile wireless charging module: installed on the guide rail device, used to move to the area below the corresponding parking space to control the start or stop of wireless charging of the vehicle; Cable management module: connected to the mobile wireless charging module, used to provide power and communication to the mobile wireless charging module through a flexible cable; System control unit: connected to the mobile wireless charging module and cable management module, used to receive charging requests, control the mobile wireless charging module to move according to the charging requests, perform wireless charging, and control the mobile wireless charging module to move away after charging is completed.

[0008] Furthermore, the guide rail device is laid laterally along the parking space, and its width covers multiple parking spaces.

[0009] Furthermore, the guide rail device is equipped with a rack and pinion guide mechanism inside.

[0010] Furthermore, at least one mobile wireless charging module is provided.

[0011] Furthermore, the mobile wireless charging module includes a module housing, a walking mechanism, a wireless charging transmitter unit, and a cable interface. Module housing: Located on the outermost side of the wireless charging transmitter unit; Walking mechanism: Located at the bottom of the module housing, it is used to engage with the rack and pinion guide mechanism of the guide rail device to travel on the guide rail device; Wireless charging transmitter unit: Located inside the module housing, used for wireless charging of the vehicle; Cable interface: Located on the module housing, used for connecting to the flexible cable in the cable management module.

[0012] Furthermore, the mobile wireless charging module also includes an alignment adjustment mechanism, which is disposed on the module housing and supports the wireless charging transmitter unit. The end of the alignment adjustment mechanism is provided with a support arm, which is used to mount the wireless charging transmitter unit and drive the wireless charging transmitter unit to perform horizontal extension and / or vertical lifting.

[0013] Furthermore, the wireless charging transmitting unit includes a ferrite plate, an aluminum plate, and a primary coil stacked sequentially from bottom to top, wherein the primary coil is a rounded rectangle.

[0014] Furthermore, the cable management module also includes cable trays, a fixed power supply, and a hub. Cable channel: located beside or below the guide rail device, used to accommodate flexible cables; Fixed power supply: connected to one end of the flexible cable, used to supply power to the mobile wireless charging module through the flexible cable; Hub: Located in a cable channel at at least one end, used for dynamically storing or releasing the flexible cable.

[0015] Furthermore, the cable channel is a pre-buried underground cable tray with an openable cover plate on top. The flexible cable is laid in the cable tray by means of a chute, drag chain or suspension pulley.

[0016] The present invention also provides a charging control method for the parking lot mobile wireless flexible charging system described above, comprising the following steps: The system control unit receives a charging request from the vehicle to be charged or the user terminal, wherein the charging request includes a parking space identifier. The system control unit, based on the parking space identifier, the current position and status of each mobile wireless charging module, uses a scheduling algorithm to determine the target mobile wireless charging module and its guide rail device, and issues instructions to the walking mechanism of the target mobile wireless charging module, so that it moves along the guide rail device to the corresponding parking space according to the moving path, and at the same time sends a signal to the hub to release the flexible cable synchronously until it reaches the bottom of the corresponding parking space. The ranging sensor on the top of the mobile wireless charging module is activated to locate the vehicle chassis height. Then, the system control unit controls the alignment adjustment mechanism to extend horizontally and / or rise vertically according to the vehicle chassis height until the optimal magnetic coupling position is achieved with the on-board receiving coil. Once alignment is complete, the system control unit sends a command to the power cabinet to initiate wireless charging; When charging is complete, the system control unit controls the alignment adjustment mechanism of the mobile wireless charging module to reset to the storage position, and instructs the mobile wireless charging module to return, while simultaneously instructing the hub to retract the flexible cable.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) In view of the problems of low utilization rate of charging facilities, high cost of large-scale deployment and inability to make flexible scheduling according to dynamic demand caused by the "dedicated space" mode of existing wired charging piles and fixed wireless charging devices, the present invention sets up a system control unit to control the mobile wireless charging module to perform mobile scheduling and wireless charging during use, and uses a cable management unit to provide power supply and communication through flexible cable, which enables flexible scheduling of the mobile wireless charging module to respond to the charging requests of multiple parking spaces, thereby reducing the total investment in infrastructure while significantly improving equipment utilization and system service capabilities.

[0018] (2) This invention combines a movable wireless charging module with a guide rail that covers multiple parking spaces, realizing a fundamental shift in charging resources from "fixed allocation" to "dynamic sharing", significantly improving the utilization rate of expensive charging equipment and reducing the average cost per parking space for achieving large-area wireless charging coverage in parking lots.

[0019] (3) The present invention has flexible scheduling and expansion capabilities, and can flexibly increase the number of mobile modules according to the growth of charging demand. When transforming existing parking lots, the project is relatively concentrated and the deployment is highly flexible.

[0020] (4) The present invention integrates an intelligent system control unit and a cable management module, realizing full-process automation from request response, module scheduling, automatic alignment to charging management, providing a good user experience, and ensuring orderly cable storage and retraction, and reliable system operation.

[0021] (5) The mobile wireless charging module of the present invention can be moved away from the parking space or concentrated in a specific area during non-service periods, reducing the exposure of ground equipment, which not only ensures the safety of the equipment, but also avoids the occupation and interference of ordinary parking spaces. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the system structure of the present invention; Figure 2 This is a schematic diagram of the mobile wireless charging module of the present invention; Figure 3 This is a flowchart of the parking lot mobile wireless charging control method of the present invention; In the diagram: 1. Guide rail, 2. Mobile wireless charging module, 3. Cable management module, 31. Cable channel, 32. Flexible cable, 33. Fixed power supply, 34. Hub, 4. System control unit. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0024] This embodiment provides a mobile wireless flexible charging system for parking lots, such as... Figure 1 As shown, the system includes: The guide rail device 1 is laid inside the ground of the parking area formed by multiple consecutively arranged standard parking spaces, located directly below the parked vehicle, and extends laterally along the parking spaces. Its width covers multiple standard parking spaces, and it is used to provide a track channel for the mobile wireless charging module to move across parking spaces.

[0025] Furthermore, the guide rail device 1 is equipped with a rack and pinion guide mechanism.

[0026] At least one mobile wireless charging module 2 is movably mounted on a guide rail device 1 and is capable of moving along the length of the guide rail device 1; the module includes a module housing, a walking mechanism located at the bottom of the housing, a wireless charging transmitting unit located inside the housing, and a cable interface located on the housing.

[0027] Furthermore, the walking mechanism is used to engage with the rack and pinion guide mechanism inside the guide rail device 1 to ensure stable contact between the mobile wireless charging module and the guide rail device 1 so as to move on the guide rail device 1.

[0028] Furthermore, the wireless charging transmitter unit includes a ferrite plate, an aluminum plate, and a primary coil stacked sequentially from bottom to top; the primary coil is a rounded rectangle with a length of 50 cm to 70 cm and a width of 40 cm to 60 cm.

[0029] Furthermore, the cable interface is used to connect the flexible cable 32.

[0030] In addition, the mobile wireless charging module 2 also includes an alignment adjustment mechanism, which includes a support arm connected to the module housing and capable of driving the wireless charging transmitter unit to extend horizontally and / or lift vertically; the maximum horizontal extension distance of the support arm is 0.5 meters to 1 meter, and the maximum vertical lifting stroke is 0 to 30 centimeters.

[0031] The cable management module 3 includes a cable channel 31 located beside or below the guide rail device 1, and a flexible cable 32 for powering and communicating with each mobile wireless charging module 2; one end of the flexible cable 32 is connected to a fixed power supply 33, and the other end moves with the corresponding mobile wireless charging module 2, with a portion of it being accommodated in the cable channel 31; at least one end of the cable channel 31 is provided with a hub 34 for dynamically storing or releasing the flexible cable 32.

[0032] Furthermore, the cable trough 31 is a pre-buried underground cable tray with an openable cover plate on top; the flexible cable 32 is laid in the cable tray by means of a chute, a drag chain or a hanging pulley.

[0033] The system control unit 4 is communicatively connected to the mobile wireless charging module 2 and the cable management module 3. It is used to receive charging requests, schedule and control the target mobile wireless charging module 2 to move to the corresponding parking space to perform wireless charging according to the parking space information in the request, and control it to move away after charging is completed.

[0034] The system control unit 4 is specifically used for: Receive charging requests and parking space identification information from vehicles waiting to be charged or user terminals; Based on the parking space sign information, a target mobile wireless charging module 2 is moved to the area below the corresponding parking space; The target is controlled to move the wireless charging module 2 to perform coil alignment and start wireless charging; When the charging conditions are met, the target is controlled to move the wireless charging module 2 to stop charging and move away.

[0035] In summary, this embodiment yields the above-described mobile wireless flexible charging system for parking lots. For example... Figure 3 As shown, the charging control steps of this system are as follows: S1: The system control unit 4 receives a charging request from the vehicle to be charged or the user terminal, wherein the charging request includes a parking space identifier. S2: The system control unit 4 uses a scheduling algorithm to determine the target mobile wireless charging module 2 and its guide rail device 1 based on the parking space markings, the current location and status of each mobile wireless charging module 2; S3: The system control unit 4 sends a command to the walking mechanism of the target mobile wireless charging module 2, so that it moves along the guide rail device 1 to the corresponding parking space according to the moving path, and at the same time sends a signal to the hub 34, so that it releases the flexible cable 32 synchronously until it reaches the bottom of the corresponding parking space. S4: The ranging sensor on the top of the mobile wireless charging module 2 is activated to locate the vehicle chassis height. Then the system control unit 4 controls the alignment adjustment mechanism to extend horizontally and / or lift vertically according to the vehicle chassis height until the optimal magnetic coupling position is achieved with the vehicle-mounted receiving coil. S5: After alignment is complete, the system control unit 4 sends a command to the power cabinet to start wireless charging; S6: When charging is finished, the system control unit 4 controls the alignment adjustment mechanism of the mobile wireless charging module 2 to reset to the storage position, and instructs the mobile wireless charging module 2 to return, while instructing the hub 34 to retract the flexible cable 32 simultaneously.

[0036] Furthermore, when selecting the target mobile wireless charging module 2, the mobile wireless charging module 2 with the shortest moving distance and maintaining a preset minimum safe distance from other mobile wireless charging modules 2 after moving is preferentially selected as the target mobile wireless charging module 2.

[0037] This embodiment is also applied in real-world scenarios, as follows: 1. Guide rail device 1: A straight guide rail device 1 is pre-embedded under the ground of the six parking spaces in this row. Its laying direction is perpendicular to the long side of the parking space (i.e., laid horizontally), and its total length is designed to be 16 meters, which is sufficient to cover the width of the six parking spaces and leaves room for end buffers. The top surface of the guide rail device 1 is flush with the asphalt ground and is equipped with a rack and pinion guide mechanism inside.

[0038] 2. Mobile wireless charging module 2: Configure one mobile wireless charging module 2, the specific form of which is as follows Figure 2 As shown, the primary coil in its wireless charging transmitter unit measures 60cm × 50cm (rounded rectangle), which meets the coupling size requirements of mainstream electric vehicle receiver coils. The module integrates an alignment adjustment mechanism, and its support arm can achieve horizontal adjustment of ±0.4 meters and vertical lifting of 0-25 cm.

[0039] 3. Cable Management Module 3: A cable channel 31 (200mm × 150mm cross-section) is pre-embedded parallel to one side of the guide rail device 1 (near the power distribution room), and a 30-meter-long dedicated flexible cable 32 is laid inside it. One end of the cable is connected to the fixed power supply 32 and control cabinet located at the edge of the parking lot, and the other end passes through a hub 34 and connects to the cable interface of the mobile charging module 2. The hub 34 is equipped with a servo motor drive and can synchronously move with the module to retract and extend the cable.

[0040] 4. System control unit 4: Its hardware controller is integrated into the fixed power supply 33 and control cabinet, and the software system has basic single-module scheduling, position control and charging management functions.

[0041] After completing the above system construction, refer to Figure 3 The workflow shown is used to conduct system testing: This embodiment verifies the complete workflow and core performance of the system by simulating a series of typical user charging scenarios.

[0042] 1. Simulate a single charging request and response process: Trigger: The user drives the electric vehicle into a parking space and submits a charging request.

[0043] Scheduling: System control unit 4 receives a "request charging" command. A database query reveals that mobile charging module 2 is currently at a "standby point" and is in an idle state. The scheduling algorithm immediately selects it as the target module.

[0044] Movement and Cable Management: The control unit 4 sends a command to the walking mechanism of module 2, instructing it to move along the guide rail device 1 towards the corresponding parking space. Simultaneously, it sends a signal to the hub 34, causing it to release the cable synchronously. After moving smoothly at a speed of 0.5 m / s, the module accurately reaches the preset charging coordinates below the parking space and stops.

[0045] Alignment and Charging: The ranging sensor on top of the module activates to roughly determine the vehicle's chassis height. Then, the alignment adjustment mechanism operates, first vertically raising the transmitting unit by 15 cm to approach the chassis, and then fine-tuning the horizontal position based on the initial sensing until the optimal magnetic coupling position with the vehicle's receiving coil is achieved. Once alignment is complete, the control unit 4 sends a command to the power cabinet to initiate wireless charging at a standard power output conforming to national standards.

[0046] Task Completion and Reset: Charging stops upon completion (or manual stop). Control unit 4 controls module 2's alignment mechanism to reset to the storage position, then instructs the module to move back to the "standby point." Hub 34 simultaneously retracts the slack cable. No manual intervention is required throughout the process.

[0047] 2. Performance test simulating continuous service to multiple discrete parking spaces: Scenario setting: Simulate multiple parking spaces receiving requests for charging at different times of the day.

[0048] System Performance: The system control unit 4 sequentially dispatches the same mobile module 2 to multiple corresponding parking spaces to perform charging tasks. By recording the response time from receiving a request to the module starting to move, and the travel time of the module to different parking spaces, the system's continuous service capability for discretely distributed demand can be evaluated. The test results will intuitively demonstrate how a single mobile module can effectively cover far more parking spaces than it has through a "cruising" method, significantly different from the "one-to-one" idle mode of fixed charging piles.

[0049] This embodiment fully verifies the feasibility of the system of the present invention in achieving regional coverage, automatic operation and efficient service with fewer mobile wireless charging modules 2 in multiple parking space scenarios, providing a specific and operable implementation template for the implementation of the core concept.

[0050] Any matters not covered in this invention shall be handled in accordance with existing technologies. The above descriptions are merely preferred embodiments of this invention and do not limit the patent scope of this invention. Any equivalent structural or procedural modifications made based on the description and drawings of this invention, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this invention.

Claims

1. A mobile wireless flexible charging system for parking lots, characterized in that, It includes a guide rail device (1), a mobile wireless charging module (2), a cable management module (3), and a system control unit (4). Guide rail device (1): laid inside the ground of a parking area formed by multiple parking spaces arranged in a continuous manner, used to provide a track channel for the mobile wireless charging module (2) to move across parking spaces; Mobile wireless charging module (2): set on the guide rail device (1), used to move to the bottom of the corresponding parking space and control the start or stop of wireless charging of the vehicle; Cable management module (3): connected to the mobile wireless charging module (2), used to provide power and communication to the mobile wireless charging module (2) through a flexible cable (32); System control unit (4): connected to the mobile wireless charging module (2) and cable management module (3), used to receive charging requests, control the mobile wireless charging module (2) to move according to the charging requests, perform wireless charging, and control the mobile wireless charging module (2) to move away after charging is completed.

2. The mobile wireless flexible charging system for parking lots according to claim 1, characterized in that, The guide rail device (1) is laid laterally along the parking space and its width covers multiple parking spaces.

3. The mobile wireless flexible charging system for parking lots according to claim 1, characterized in that, The guide rail device (1) is equipped with a rack and pinion guide mechanism inside.

4. A mobile wireless flexible charging system for parking lots according to claim 1, characterized in that, At least one mobile wireless charging module (2) shall be provided.

5. A mobile wireless flexible charging system for parking lots according to claim 1, characterized in that, The mobile wireless charging module (2) includes a module housing, a walking mechanism, a wireless charging transmitter unit, and a cable interface. Module housing: Located on the outermost side of the wireless charging transmitter unit; Walking mechanism: set at the bottom of the module housing, for meshing with the rack and pinion guide mechanism inside the guide rail device (1) to travel on the guide rail device (1); Wireless charging transmitter unit: Located inside the module housing, used to wirelessly charge the vehicle in conjunction with the power cabinet; Cable interface: Located on the module housing, used to connect to the flexible cable in the cable management module (3).

6. A mobile wireless flexible charging system for parking lots according to claim 5, characterized in that, The mobile wireless charging module (2) further includes an alignment adjustment mechanism, which is disposed on the module housing and supports the wireless charging transmitter unit. The end of the alignment adjustment mechanism is provided with a support arm, which is used to set the wireless charging transmitter unit and drive the wireless charging transmitter unit to extend horizontally and / or rise vertically.

7. A mobile wireless flexible charging system for parking lots according to claim 5, characterized in that, The wireless charging transmitter unit includes a ferrite plate, an aluminum plate, and a primary coil stacked from bottom to top, wherein the primary coil is a rounded rectangle.

8. A mobile wireless flexible charging system for parking lots according to claim 1, characterized in that, The cable management module (3) also includes a cable channel (31), a fixed power supply (33), and a hub (34). Cable channel (31): Located on the side or below the guide rail device (1) for accommodating flexible cable (32). Fixed power supply (33): connected to one end of the flexible cable (32) for supplying power to the mobile wireless charging module (2) through the flexible cable (32); Hub (34): disposed in a cable channel (31) at at least one end for dynamically storing or releasing the flexible cable (32).

9. A mobile wireless flexible charging system for parking lots according to claim 8, characterized in that, The cable trough (31) is a cable tray pre-buried underground, with an openable cover plate on its top. The flexible cable (32) is laid in the cable tray by means of a chute, drag chain or suspension pulley.

10. A charging control method for a parking lot mobile wireless flexible charging system according to any one of claims 1-9, characterized in that, Includes the following steps: The system control unit (4) receives a charging request from the vehicle to be charged or the user terminal, wherein the charging request includes a parking space identifier. The system control unit (4) uses a scheduling algorithm to determine the target mobile wireless charging module (2) and its guide rail device (1) based on the parking space identifier, the current position and status of each mobile wireless charging module (2). The system control unit (4) sends an instruction to the walking mechanism of the target mobile wireless charging module (2) so that it moves along the guide rail device (1) to the corresponding parking space according to the moving path, and sends a signal to the hub (34) so ​​that it releases the flexible cable (32) synchronously until it reaches the bottom of the corresponding parking space. The ranging sensor on the top of the mobile wireless charging module (2) is activated to locate the vehicle chassis height. Then the system control unit (4) controls the alignment adjustment mechanism to extend horizontally and / or lift vertically according to the vehicle chassis height until the optimal magnetic coupling position is reached with the vehicle-mounted receiving coil. After alignment is completed, the system control unit (4) sends a command to the power cabinet to perform wireless charging through the wireless charging transmitter unit; When charging is finished, the system control unit (4) controls the alignment adjustment mechanism of the mobile wireless charging module (2) to reset to the storage position, and instructs the mobile wireless charging module (2) to return, while instructing the hub (34) to retract the flexible cable (32) synchronously.

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